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A kind of preparation method of conductive silver ink

A technology of conductive silver and ink, which is applied in the field of nanomaterials, can solve the problems of clogging nozzles and affecting the quality of printed patterns, etc., and achieve the effects of improving conductivity, improving storage time and improving dispersion effect

Active Publication Date: 2020-12-29
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Agglomerated particles in the ink will affect the quality of the printed pattern, and even block the nozzle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The invention provides a kind of preparation method (abbreviation method) of conductive silver ink, it is characterized in that the method comprises the following steps:

[0020] (1) Mix 10-18 parts by mass of solvent with 0.1-0.4 parts by mass of dispersant, and stir for 1-5 minutes until the dispersant and solvent are evenly mixed to obtain a solution;

[0021] (2) Under ultrasonic dispersion conditions, 2-5 mass parts of nano-silver particles are added to the solution obtained in step 1), and ultrasonic 30-60min is obtained to obtain a nano-silver dispersion;

[0022] (3) Add 0.1-0.2 mass parts of pH regulator to the nano-silver dispersion obtained in step 2, make the pH value of the ink about 7, ultrasonic 30-60min makes the pH regulator completely disperse;

[0023] (4) Add 0.02-1 mass parts of surface tension modifier and 0.8-2 mass parts of tackifier, stir for 1-5min, control surface tension at 25-30dyn / cm, viscosity 3-20cP;

[0024] (5) Add 0.002-0.02 parts by ...

Embodiment 1

[0037] (1) Dissolve 1 g of polyvinylpyrrolidone in 50 ml of ethanol solution, and stir for 5 minutes at room temperature until the polyvinylpyrrolidone is completely dissolved.

[0038] (2) Slowly add 8 g of nano-silver particles with a particle size of 35 nm in the stirring process, and then ultrasonically oscillate for 30 min until the nano-silver particles are completely dispersed to obtain a nano-silver dispersion.

[0039] (3) Slowly add 0.5 g of magnesium tourmaline particles with a particle size of 35 nm into the nano-silver dispersion liquid during stirring, and then ultrasonically vibrate for 30 minutes until the tourmaline particles are completely dispersed.

[0040] (4) Add 0.5 g of sodium dodecylsulfonate and 2.5 g of terpineol, and stir for 5 minutes, so that the surface tension of the solution is 25.2 dyn / cm, and the viscosity is 3.2 cP, which meets the rheological performance requirements of 3D printing ink.

[0041] (5) Add 0.1 g of benzoic acid, 0.1 g of dieth...

Embodiment 2

[0045] (1) Dissolve 1 g of polyvinyl alcohol in 50 ml of ethanol solution, and stir for 5 minutes at room temperature until the polyvinyl alcohol is completely dissolved.

[0046] (2) Slowly add 8 g of nano-silver particles with a particle size of 35 nm in the stirring process, and then ultrasonically oscillate for 30 min until the nano-silver particles are completely dispersed to obtain a nano-silver dispersion.

[0047] (3) Slowly add 0.5 g of calcium magnesium tourmaline particles with a particle size of 35 nm into the nano-silver dispersion liquid during stirring, and then ultrasonically vibrate for 30 minutes until the tourmaline particles are completely dispersed.

[0048] (4) Add 0.8 g of alkylphenol polyoxyethylene ether-10 and 2.5 g of terpineol, and stir for 5 minutes, so that the surface tension of the solution is 25.7 dyn / cm, and the viscosity is 3.4 cP, which meets the rheological performance requirements of 3D printing ink.

[0049] (5) Add 0.1 g of benzoic acid,...

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Abstract

The invention discloses a preparation method of conductive sliver ink. A solvent and a dispersant are mixed and stirred until the dispersant and the solvent are mixed uniformly, and a solution is obtained; nanosilver particles are added under the ultrasonic dispersion condition, and a nanosilver dispersion solution is obtained; a pH regulator is added and completely dispersed; a surface tension regulator and a tackifier are added and stirred uniformly; a preservative, a defoaming agent and an adhesive are added and stirred to be uniformly mixed, and a mixed solution is obtained; the mixed solution is filtered, precipitates are removed, and stably dispersed conductive silver ink is obtained. Nano tourmaline particles are added to regulate the pH environment. The method adopts a simple preparation process, and the prepared ink has good stability and can be stored for a longer time.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, in particular to a preparation method of conductive silver ink. Background technique [0002] Printed electronics technology refers to the emerging crossover technology that selectively deposits conductive ink on the substrate by means of gravure printing, screen printing, etc., and makes it conductive through post-processing. Printed electronics technology overcomes the complex process, waste of resources, and large amount of chemical pollution in the traditional etching process of preparing circuit boards. Its production process is simple and flexible, and its cost is low. The mainstream technology of circuit boards. At present, printed electronic technology has been successfully applied in electronic tags (RFID), organic thin-film transistors (OTFT), PCB boards, solar grids and other fields, and has broad development prospects. [0003] Among many ink deposition methods, 3D print...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/38
CPCC09D11/38C09D11/52
Inventor 朱东彬吴民强王竹贤
Owner HEBEI UNIV OF TECH
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